Monsieur Rock will be available in 50cl bottles with an rrp of £2 from January.
The collaboration was born after Sharp’s head brewer Stuart Howe visited Orval in the summer.
Howe said: “Monsieur Rock showcases the beauty of the Saaz hop and the depth and clarity of flavour produced through extended lagering.”
OLN columnist Zak Avery, who has had a sneak preview of the beer, added: “It was extraordinary – a 5% abv beer that drank like a session beer and with a depth of sweetly herbal complexity that made it ruiniously drinkable.
“It’s classic British ale, filtered through the minds of a couple of great brewers, and making a virtue of such old-fashioned values as elegance and understatedness.”